Backpack



FIG. 1 is a front view showing my new design for a backpack.

FIG. 2 is a back view of the backpack of FIG. 1.

FIG. 3 is a right side view of the backpack of FIG. 1.

FIG. 4 is a left side view of the backpack of FIG. 1.

FIG. 5 is a top view of the backpack of FIG. 1; and,

FIG. 6 is a bottom view of the backpack of FIG. 1.

Broken lines in the Figures depict portions of the backpack that form no part of the claimed design. 

CLAIM The ornamental design for a backpack, as shown and described. 